Enhanced hydrogen evolution reaction in FePt film with remanence due to decrease in domain walls  

作　　者：Hong Hong Dong-Xue Liu Jun Li Jun-Ming Li Li-Qian Wu Bo Yang Qing-Qi Cao Dun-Hui Wang 

机构地区：[1]National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Jiangsu Provincial Key Laboratory for Nanotechnology,School of Physics,Nanjing University,Nanjing,210093,China [2]Hangzhou Dianzi University,Hangzhou,310018,China [3]Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),School of Material Science and Engineering,Northeastern University,Shenyang,110819,China

出　　处：《Rare Metals》2024年第3期1108-1115,共8页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52101215)。

摘　　要：As an effective strategy to improve the properties of electrocatalysts,magnetic field-assisted electrocatalytic water splitting has attracted increasing attention recently.However,the corresponding enhancements mostly depend on the exertion of an external magnetic field during electrochemical reactions,which results in a high cost of industrial production,and makes the magnetic field manipulation of electrocatalysis become a challenging task.In this work,instead of the external magnetic field,a bias magnetic field is self-supplied by the remanence state of a ferromagnetic electrocatalyst of FePt.Owing to the assistance of this bias magnetic field,the FePt film in the remanence state shows the overpotential of 229 mV during hydrogen evolution reaction,which is much lower than that in its demagnetization state(283 mV).Our findings demonstrate that the remanence in ferromagnetic electrocatalysts can improve the catalytic performance,which is attributed to the decrease in domain walls.

关 键 词：REMANENCE Magnetic domains ELECTROCATALYSIS Hydrogen evolution reaction(HER) 

分 类 号：TQ426[化学工程] TQ116.2